lenaeets



(No Model.)

L. LENABRTS & H. LOLIVIER.

GAS BLEGTRIG ADVERTISER 000K.

No. 841,926. Patented May 18, 1886.

Unrrnn rates ATENT rrrcn.

LEON LENAERTS AND HENRI LOLIVIER, OF BRUSSELS, BELGIUM.

GAS ELECTRIC ADVERTISER-COCK.

SPECIFICATION forming part of Letters Patent No. 341,926, dated May 18,1886.

Application filed October 5, 1885. Serial No. 179,045. (No model.)Patented in Belgium July 18, 1885, No. 69,637.

To all whom it mag concern:

Be it known that we, LEON LENAERTS and HENRI LOLIVIER, subjects of theKing of Belgium, both residing at Brussels, Belgium, have .inventedcertain new and useful Improvements in Annunciators for Gas Burners orPipes, of which the following is a specificat-ion.

The principal objection that has been made to the shutting off of gas atthe meter while the gas is not being employed is that if, at the momentof such stoppage of the flow at the meter, one or more burners haveremained open, there is produced, when the flow is recommenced, anescape of gas at such burners 'which may prove very dangerous. Theinconvenience exists whether the cock is operated by hand at the meteror from a distance by the aid of intervening mechanism. To remedy thisstate of things We have devised a novel and very simple apparatus,giving absolute security. Such apparatus consists in a double electriccontact operating an annunci ator if at the moment when the flow of gasis stopped a gas burner has remained open. Immediate notice is thusgiven and the burner at fault easily discovered.

In the accompanying drawings, Figure l is a front view of a burner towhich our improvements have been applied. Fig. 2 is a side View of thesame. Fig. 3 shows in elevation the meter, a lamp, and electric circuit.

A is the key ofthe burner. B is a contactspring, which, in the openposition of the key, rests against the binding-post C. i The negativepole of the electric circuit, including the bell Y, is connected to thegas-pipe X, and thus to key Aand spring B,whilethe positive pole isconnected to post 0 by an insulated wire. The outer end of said post isof course insnlated'from the gas-pipe conductor by a block, 11, ofebonite or other insulating material. Not only is it necessary to closethe circuit at B G by bringing the spring against the binding-post, buta second interruption of the circuit exists at the meter itself, whichmust be closed before the bell will be sounded. The contact at the meteris similar to that at the burner-that is to say, the other end of wireconductor terminates at a post, 0, insulated from the gas-pipe, and acontact-spring, B, on the cock A is adapted to rest on said post whenthe passage to the meter is closed, Thus,

should the gas be cut off at the meter, it will close the circuit atthis point, and if the key of any burner has remained open the circuitwill also be closed at that point,-so that the alarm will be soundeduntil the open burner is found and its key turned.

For chandeliers or other apparatus carrying several burners, it may besufficient to simply connect their common keys with the alarm. Anindicator can also be arranged, if need be, to show exactly which burneris at fault. In houses possessing already electric alarms this systemmay be perfectly combined with the circuits already existing.

WVe have shown a simple cock operated at the meter by hand; but it isobvious that the arrangement of the essentials of the invention would bethe same withan apparatus in which the cock at the meter was operatedfrom a distance.

Having thus described our invention and the manner of carrying it out,what we claim as new therein is-- 1. An alarm system for giving noticeof the position of the key of a gas-burner, consisting in thecombination, with such burner, a meter, and the connecting-pipe, ofcooks for cutting off the gas at the meter and burner, respectively, anelectric circuit, and movable contacts in said circuit at the meter andburner, respectively, for making and breaking Stl( circuit.

2. In combination with a burner, a meter, and a connecting gaswpipe,cocks for closing said pipe at the burner and meter, respectively, anelectric circuit, contacts in said circuit carried by both of saidcocks, and so arranged that the circuit is closed at one point by onecock when said cock'is open, and by the other at another point when saidcock is shut, substantially as set forth.

3. In combination with a burner, a meter, and a connecting gas-pipe, anelectric circuit, movable contacts in said circuit at the meter andburner, respectively, and an annunciator in said circuit for giving analarm, substantial] y as set forth.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

LEON LENAERTS. HENRI LO'LIVIER. Witnesses:

EMILE PIBARD, HUBER'I OFE.

